Making a 32x24 LED matrix and need some assistance with the logistics and schematic

hp1729

Joined Nov 23, 2015
2,304
Here you go. This is a layout using 5 mm LEDs on .5" spacing. The strips are somewhat offset from the blue field and of course the black dots represent white LEDs. The overall size is 15.5" x 9.65". You could reduce the overall size by using 3 mm LEDs on .4 mm spacing. You might get a better effect by putting the LEDs behind a plastic diffuser.View attachment 109971
You will need a total of 758 LEDs; 327 Red, 338 White, and 93 Blue.
758 x 10 mA = 7.58 amps
You will need a power supply capable of delivering at least that much current. Unfortunately, you're going to find that they ain't cheap!
Super design! Test your LEDs at 10 mA (or what ever you are going to run them at). You will probably find they run at a lower voltage at less current.
 

Bernard

Joined Aug 7, 2008
5,784
LED Flag 2 00000.jpg LED Flag 2 00000.jpg I have shown a layout used for a beer can reflector, Christmas tree lights flag.
Ben shining & waving since 2004 with about 3/4 original bulbs. Maybe stretch the spacing a bit to make 20 LEDs cover 11.5 in. Total LEDs 247, current about 1 A
Something strange going on, can not bring up picture when uploading, but I've seen it. Will post this much & try something.
 
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Bernard

Joined Aug 7, 2008
5,784
How to have a blue star field & white LED stars ? As an experiment I dipped a white 5 mm LED into blue lacquer
then wiped off the top-- does not look too bad.
 
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